Using D3 in a React component to transition elements. Alternative implementations only with D3 and using React's TransitionGroup addon.
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April 12, 2017 13:24
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Transitions with React and D3 I
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { | |
| background: #fff; | |
| } | |
| .item { | |
| fill: none; | |
| stroke-width: 1.5; | |
| } | |
| </style> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://fb.me/react-0.9.0.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500, | |
| data = []; | |
| var x = d3.scale.linear() | |
| .domain([0, 1]) | |
| .range([0, width]); | |
| var y = d3.scale.linear() | |
| .domain([0, 1]) | |
| .range([150, height - 150]); | |
| var r = d3.scale.sqrt() | |
| .domain([0, 1]) | |
| .range([0, 30]); | |
| var chart = React.createClass({ | |
| render: function() { | |
| return React.DOM.svg({ | |
| width: width, | |
| height: height | |
| }); | |
| }, | |
| componentDidUpdate: function() { | |
| var item = d3.select(this.getDOMNode()).selectAll('circle') | |
| .data(this.props.items, function(d) { return d.key; }); | |
| item.enter().append('circle') | |
| .attr('class', 'item') | |
| .attr('r', function(d) { return r(d.r); }) | |
| .attr('cx', function(d) { return x(d.x); }) | |
| .attr('cy', 0) | |
| .style('stroke', '#3E6E9C') | |
| .transition().duration(1000) | |
| .attr('cy', function(d) { return y(d.y); }) | |
| .style('stroke', '#81E797'); | |
| item.exit().filter(':not(.exiting)') // Don't select already exiting nodes | |
| .classed('exiting', true) | |
| .transition().duration(1000) | |
| .attr('cy', height) | |
| .style('stroke', '#3E6E9C') | |
| .remove(); | |
| } | |
| }); | |
| function render() { | |
| React.renderComponent( | |
| chart({items: data}), | |
| document.body | |
| ); | |
| } | |
| var circlesCreated = 0; | |
| function add() { | |
| data.push({key: Date.now(), x: Math.random(), y: Math.random(), r: Math.random()}); | |
| render(); | |
| setTimeout(data.length < 100 ? add : remove, 5); | |
| } | |
| function remove() { | |
| data = data.slice(1); | |
| render(); | |
| if (++circlesCreated === 1000) console.timeEnd('1000 circles'); | |
| setTimeout(data.length > 0 ? remove : add, 5); | |
| } | |
| console.time('1000 circles'); | |
| add(); | |
| </script> |
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